The embodiments of the invention provides a load balancing method and device. The method comprises: transmitting, when a user equipment (UE) is located in an intra-frequency dual-connectivity area, to the UE, a dual-connectivity command configured to instruct the UE to connect to a macro base station and a target low power node (LPN) associated with the macro base station, wherein the intra-frequency dual-connectivity area is a cell range expansion (CRE) area after expanding a coverage area of the target LPN; determining, according to a signal strength of the target LPN and measured by the UE, location information of the UE, and assigning, according to the location information, a serving base station to the UE. The embodiments of the invention can flexibly and quickly realize adjustment of loads in a heterogeneous network (HetNet), balancing the loads in the HetNet, and increasing a utilization rate of LPNs.
